Blackboard for partitions.



No. 892,954. PATENTED JULY 7, 1908.

H. J. HANSON.

BLAGKBOARD FOR PARTITIONS.

APPLICATION FILED 8BPT.3, 1907.

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I Suva/"tom WW? I I I v w I HANS J. HANSON, OF LITOHVILLE, NORTH DAKOTA.

BLAGKBOARD FOR PARTITIONS.

Specification of Letters Patent.

Patented July '7, 1908.

Application filed September 3, 1907. Serial No. 391,133.

To all whom it may concern:

Be it known that I, HANs J. llANSON, citizen of the United States,residing at Litchville, in the county of Barnes and State of NorthDakota, have invented certain new and useful Improvements in Blackboardsfor Partitions, of which the following is a specification.

The present invention relates to certain new and useful improvements inblackboards and the like and more particularly to a novel-method formounting the blackboard in a partition between two rooms whereby datamarked upon the same in one room can be exposed to view in the oppositeroom.

This invention will be found particularly useful in railroadstations-where it is necessary to keep a train schedule constantly inview for the information of the public.

For a full understanding of the invention and the merits thereof andalso to acquire a knowledge of the details of construction and the meansfor effecting the result, reference is to be had to the followingdescription and accompanying drawings, in which:

Figure 1 is a erspective view showing the application of t e lnvention;and, Fig. 2 is an enlar ed horizontal sectional view through the blac-board.

Corresponding and like parts are referred to in the followin descriptionand indicated in all the views of drawings by the same referencecharacters.

The black-board is shown as mounted in the partition 1 separating thetwo rooms 2 and 3, whereby data placed upon the board in one room can beexposed to view in the opposite room. A frame 4 is arranged in thepartition 1- and defines an opening within which the swinging frame 5 ispivotally mounted, the said swinging frame carrying a blackboard 6, bothfaces of which are designed for use. In the present instance, the frame5 swings about a vertical axis and intermediate ortions of the sides ofthe same are engageLf by pivot bolts 7 carried by the correspondingsides of the stationary frame 4. For the purpose of holding the swingingframe 5 in normal position, the right and left edges of the same eachhave a spring strip 8 applied thereto, portions of the said strips beingdeflected outwardly and provided with openings designed to engage knobsor projections 9 upon the stationary frame 4. It will thus be apparentthat the board can be tilted to expose the opposite faces thereofalternately to view in the two rooms and that data can be placed uponone of the faces of the board in one of the rooms, while the oppositeface is exposed to view in the remaining rooms.

Having thus described the invention, what is claimed as new is:

A black-board for partitions comprising a stationary frame arranged inthe artition, a swinging frame pivotally mounte within the stationaryframe, a black-board carried by the swinging frame and having the twofaces thereof exposed alternately to view upon opposite sides of thepartition, spring strips applied to the edges of the swinging frame andhaving portions thereof deflected and provided with openings, andprojections upon the stationary frame for engaging the openings in thesaid spring strips.

In testimony whereof I aflix my signature in presence of two witnesses.

HANS J. HANSON. l/Vitnesses:

H. O. I'IANSON, P. B. HEYsToD.

